I think you should let it go to the bitter end if all other variables are correct it can only help co2 is never going to harm your plants. CO2 also does allow for higher temperatures but as another poster pointed out, with the increase in temperature you could also increase other problems. If...
You have indoor marijuana horticulture? Where in there does it say run your ph at 5.5? My copy says 5.8 to 6.2. 5.5 is too low I think if your having problems adjust it upwards. It really should be neutral to slightly acidic. I in 20 years have never heard 5.5 as an acceptable level for nutrient...
If you want to burn your ass and break alot of bulbs go with HID or t-5s if you want to spend alot of money go with leds. There is always the traditional method of figuring out the square footage of the room and make sure you have 100-150 watts per sq ft and spacing your plants properly. Maybe...
Is that the ph of the water or the soil? They both have to be correct.Did you pot these yourself or did they come in that soil? Most fertilizer acidifies the water and you will need to add ph up. Test the ph before you water. Water hardness is also a factor, did you test this? It might seem like...
Yes you might have to stake them up and prune the lower 25% but they should be fine. Pruning the bottom might seem counter-intuitive but if you flower taller plants the light has to be raised. The bottoms will get leggy and never fully form into tightly packed calyxes covered with trichromes...